the chinese economy opened up a world of opportunities. a world of brand new shoppers. >> farmers are leaving these fields and are not becoming just workers but consumers. they are off to join the middle class. >> welcome to our viewers on public television and around the globe. kennedy'sfter john f. famous speech in berlin -- president obama a vote the cold war -- with a call to stop nuclear weapons. he asked for the u.s. and russia to reduce their stockpiles by one-third. the reaction from moscow was dismissive. >> president obama inspected the troops in the city that has known to much war. facing east of the brandenburg gate, he was cheered for removing his coat. >> i am feeling so good i am going to take off my jacket. >> speaking from behind bulletproof glass, he said the city has withstood war but has to be torn down. >> we can say in berlin and europe, our values one, onwon.ce and freedom >> he said they had to help people in burma and afghanistan. >> these people want to join the free world -- free world. they want our support beca